SO on my busa project i'm having a lot of trouble. I'm looking at pistons and I'm getting different CR figures for the same part number. The manufacture site says one thing the distributers say another and ebay folks say another thing again. How do I determine the EXACT compression ratio so I get all of my numbers right. Then when boost comes to the neighborhood to play how to I figure that out???
Figure actual CR
- Thread starter bobq31
- Start date
You'll have to do some measuring.
I've got an excel spreadsheet I made that will do the calculations.
You need to know deck height,
Chamber cc
head gasket thickness
Piston CC
Bore
Stroke
Most of the advertised numbers on N/A pistons are best case numbers.
You'll be running a spacer so it is best to mock it up and get the actual measurements and make needed changes to get to your goal.
I've got an excel spreadsheet I made that will do the calculations.
You need to know deck height,
Chamber cc
head gasket thickness
Piston CC
Bore
Stroke
Most of the advertised numbers on N/A pistons are best case numbers.
You'll be running a spacer so it is best to mock it up and get the actual measurements and make needed changes to get to your goal.
Similar threads
